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Researcher: The question is not whether epigenetic learning is inherited but how

Why do the epigenetic changes last only a few generations? Hmmm. Well, if life, in general, exists by design and not by chance, many adaptations may only be intended to last a few generations. Environments constantly change, after all, and a requirement that all patterns be locked in could be a road to extinction. Read More ›

Epigenetics: Roundworm study focuses on health effects transmitted through sperm

From ScienceDaily: For many years, it was thought that sperm do not retain any histone packaging and therefore could not transmit histone-based epigenetic information to offspring. Recent studies, however, have shown that about 10 percent of histone packaging is retained in both human and mouse sperm. “Furthermore, where the chromosomes retain histone packaging of DNA is in developmentally important regions, so those findings raised awareness of the possibility that sperm may transmit important epigenetic information to embryos,” Strome said. When her lab looked at C. elegans sperm, they found the sperm genome fully retains histone packaging. Other researchers had found the same is true for another commonly studied organism, the zebrafish. “Like zebrafish, worms represent an extreme form of histone Read More ›